From 84adefa331c4159d432d22840663c38f155cd4c1 Mon Sep 17 00:00:00 2001
From: Erlang/OTP <otp@erlang.org>
Date: Fri, 20 Nov 2009 14:54:40 +0000
Subject: The R13B03 release.

---
 lib/os_mon/c_src/mod_syslog.c | 137 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 lib/os_mon/c_src/mod_syslog.c

(limited to 'lib/os_mon/c_src/mod_syslog.c')

diff --git a/lib/os_mon/c_src/mod_syslog.c b/lib/os_mon/c_src/mod_syslog.c
new file mode 100644
index 0000000000..87fbfbac22
--- /dev/null
+++ b/lib/os_mon/c_src/mod_syslog.c
@@ -0,0 +1,137 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 1996-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+#include 	<stdio.h>
+#include 	<string.h>
+#include 	<unistd.h>
+#include 	<sys/types.h>
+#include 	<sys/stat.h>
+#include 	<signal.h>
+
+	/* arguments */
+#define		MODE		1
+#define		OWNPATH		2
+#define		SYSLOGCONF	3
+#define		NARG		3
+
+	/* status codes */
+#define		OK		0
+#define 	ARG_ERROR	-1
+#define 	FILE_ERROR	-2
+#define 	KILL_ERROR	-3
+#define		PIPE_NOT_FOUND	1
+
+	/* hardwired */
+#define 	SYSLOG_PID	"/etc/syslog.pid"
+#define 	PIPENAME	"syslog.otp"
+#define		SYSLOGCONF_ORIG	"syslog.conf.ORIG"
+#define		SYSLOGCONF_OTP	"syslog.conf.OTP"
+#define 	BUFFER_SIZE	1001
+#define 	MAXNAME_SIZE	1001
+#define		FALSE		0
+#define		TRUE		1
+#define		WAIT		1
+
+main(int argc, char *argv[])
+/*	usage: mod_syslog mode ownpath syslogconf */
+{
+    int	syslogd_pid, n_lines_copied=0;
+    int	otp_sw, find_sw=FALSE;
+    char	buf[BUFFER_SIZE], pipename[MAXNAME_SIZE], srcname[MAXNAME_SIZE];
+    FILE	*srcfile, *destfile, *pidfile;
+    
+    void	make_exit(int);
+    
+    /* enough arguments? */
+    if(argc < NARG+1)
+	make_exit(ARG_ERROR);
+    
+    /* enable OTP or not */
+    if(strcmp(argv[MODE], "otp") == 0)
+	otp_sw = TRUE;
+    else if(strcmp(argv[MODE], "nootp") == 0)
+	otp_sw = FALSE;
+    else
+	make_exit(ARG_ERROR);
+    
+    /* make pipename */
+    strcpy(pipename, argv[OWNPATH]);
+    strcat(pipename, "/");
+    strcat(pipename, PIPENAME);
+    
+    /* remove old pipe and make a new one */
+    if(otp_sw){
+	/* remove */
+	unlink(pipename);
+
+	/* make a new */
+	if(mknod(pipename, S_IFIFO | S_IRUSR | S_IWUSR | S_IRGRP |
+		 S_IWGRP | S_IROTH | S_IWOTH, (dev_t)0) != 0)
+	    make_exit(FILE_ERROR);
+    }
+    
+    /* make source filename */
+    strcpy(srcname, argv[OWNPATH]);
+    strcat(srcname, "/");
+    strcat(srcname, otp_sw?SYSLOGCONF_OTP:SYSLOGCONF_ORIG);
+    
+    /* open source and destination, exit if error */
+    if((srcfile = fopen(srcname, "r")) == NULL ||
+       (destfile = fopen(argv[SYSLOGCONF], "w")) == NULL)
+	make_exit(FILE_ERROR);
+    
+    /* copy source and destination, exit if error */
+    while(fgets(buf, BUFFER_SIZE-1, srcfile) != NULL){
+	/*	find_sw |= strstr(buf, PIPENAME) != NULL;	*/
+	n_lines_copied++;
+	if(fputs(buf, destfile) == EOF)
+	    make_exit(FILE_ERROR);
+    }
+    if(ferror(srcfile) || n_lines_copied == 0)
+	make_exit(FILE_ERROR);
+    
+    /* open pidfile, exit if error */
+    if((pidfile = fopen(SYSLOG_PID, "r")) == NULL)
+	make_exit(FILE_ERROR);
+    
+    /* read pid for syslogd, exit if error */
+    if(fscanf(pidfile, "%d", &syslogd_pid) == 0)
+	make_exit(FILE_ERROR);
+    
+    /* send HUP to syslogd, exit if error */
+    if(syslogd_pid < 0 || kill((pid_t)syslogd_pid, SIGHUP) != 0)
+	make_exit(KILL_ERROR);
+    
+    /* remove pipe */
+    if(!otp_sw){
+	sleep((unsigned)WAIT);
+	unlink(pipename);
+    }
+    
+    /* ending successful or with warning */
+    /* if(!find_sw && otp_sw)
+       make_exit(PIPE_NOT_FOUND);
+       else */
+    make_exit(OK);
+}
+
+void	make_exit(int exit_code)
+{
+    printf("%d", exit_code);
+    exit(0);
+}
-- 
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